Handlakp



Dec. 28 1926.

d 1? a; 19 :I 18 20 20 8 M 20 23 a1 BEST AVAILABLE COP\ 1,612,527 (3. J.NELSON HANDLAMP Filed August 1 INVENT R Patented Dec. 28, 1926.

UN E!) Starr-4s BEST AVAILABLE coP.

ear-ENE Q FwE CHARLES J. NELSON. or new Y RK. it. Y..- Assienoa. ransnnASSIGNMENTS, TO

NATIONAL This invention relates to new and useful improvements in handlamps and particularly to an' improved circuit controlling the" handlamp casing without the use of defined in theappended claims.

screws, rivets and the like.

iVith this object in view I provide certain improycments,;the natureotwhich will be set. "Forth in' the following detailed description of apreferred embodiment and *In' the drawinga lffig. 1 is a side elevationof nnprove'd'hand lamp; Fig. 2 an enlarged perspective view of theswitch and th'atiportion of thefcasin r on' which it is mounted; Fig. 3is a'vertical cross-section of the handlamp with the 'switchin fiashingposition; Figs. 4 and P'a-re side and top elevations, respectively,'otthe spring con stitu ting the switch; and Fig. 5 illustrates the-switchin' its normal inoperative'position.

The hand lamp consists ot a tubular inetalli'c'casing' 1 open at bothends. The lower end may be closed by means of a removable "ca'p 2andjthe upper end is restricted by a flange 3 formed in the casing. Thecasing is preferably constructed of sheet metal'and held together in aseamed joint 4. A dry battery 5, a combination reflector and lamp socket6 and a lamp bulb 7 are enclosed by the casing. The reflector 6 isinsulated from casing 1 by means of a sleeve of insulation 8 and itsflaring end lies against a lens 9 which is held in place by the sleeve 8and the flange 3. The battery 5 is pressed with its carbon electrode 10against the base 11 of the lamp 7 by means of a coiled spring 12 whichserves also to connect the zinc electrode of the battery with the casing1.

The switch is a combination slide, actuator and contact maker and ismade of one piece of flat spring. The upper end 15 of the springconstitutes the contact maker and is slightly bent back. The adjacentportion 16 of the spring slopes upward ending in a substantially levelledge 17. The ledge 17 is followed by a nose 18 formed in the cannonCOMPANY, INC.. on NEW YOEKJN. A coniPoRATlQN. 0F

HANDLAMP.

Application filed August 1. Serial No. 417.53g.

spring. Below the nose 18 the spring is bent up almost at right anglesinto anabutment 19 which 'rises to a point above the plane of nose 18where another ledge 20 is formed substantially at right angles to 19';Then the spring i's'curve'd into an actuator or finger 'piece 21 and itslower end is doubled back at 22. "Theiacti'iator '21' is somewhat widerthan the upper end of? the spring and shoulders 23 areprojectin'g at themeeting point "of these two" parts; hich is 'in a higher planthantheledge 20fi The device maybe Isse'mbled'imtlie following manner:

formed isprovidedm ith opening and inalignment' with thisopeninga"band"or loop 25 is unchedor?misfit-0 term a sleeve. The openinga'is justw ide enouglr' to"permit passage of th'e'narrowpartof thes'witch' spring and is longer than'ledge 20. The

sheet isthen formed into tubel'. "The end 15 of the 'switcli"'spring lisi'nserted iii the opening24" andthe" spring"end '22 placed against thecasingbelow 'the' lo'op25. The spring is now 'pushedtp 'withits end '"15penetrating into'the casing and the end-22 slidingunder the band 25? Thetip of 22 is bevelled or curled'iipfas indicated at 26', to facilitateits passai ej'over th' eope'nirig in the casing below 'the oo' '25."The"-sprin ,g is advanced until it reaclies 'the position illustrated'inFig; 5, in'which'the nose 18 en- {rages the casing at the'upper'edge'ot'opening '21, andth'e lowerend 22 of thespring bridges the openingbelow band 25. The spring is so shaped and the parts so dimensioned thatthe engagement between 22 and the casing tends to press the upper end 15against the insulation 8 and away from the reflector. The spring being,out of engagement with the reflector 6, the circuit of the bulb 7 isinterrupted and accidental vertical displacement of the spring isguarded against by the nose 18. The nose 18, together with the balanceof the spring constitutes a resilient protruding part tending tomaintain the switch in an inoperative position. While the depression ofactuator 21 against the resiliency of 22 will cause the spring end 15 toapproach reflector 6, this movement is limited by the ledge 20 whichwill contact with the casing below opening 24:.

l i bulb then, in the fiashing'position the actu- If it is desired toflash the light the spring is moved longitudinally by means of theactuator 21 into the position illustrated in Figs. 2 and 3. The actuatormust be, however, first depressed, so that the nose 18 clear the casing.The'sprin end is now closer to the reflector butsti out of engagementtherewith. If the actuator is now depressed, the ledge 20 will passthrough the opening 24 until stopped by the shoulders 23 engaging the.casing adjacent the opening, and the contact point 15 will be pressedinto firm engagement with the reflector, completing the lamp circuit.

If it is desired permanently to light the ator21 is fully depresseduntil the abutment E 19 clears the casing, and the spring is pressed 1upwards until its movement is stopped by it the shoulders 23 engagingthe casing at the 'u ppergedge. of opening 24. The contact maker 15 isnow wedgedbetween the reflec- Ltor 6-and the: insulation 8 and thecircuit is permanently closed. I

Inorder; to. remove the switch from the casing,.it.is first pulled downto its normal position andthen, by means of a sharpinstrumentinsertedfbetween 'ledge20 and the easingfl the spring islifted until the abutjofopening24. -WhatIclaimis: i

ment 19 clears the casing at the lower edge and readily entirelyremovable there-.

BEST AVAILABLE COP means the other end of said spring beingdoubled-back, and a loop integral with said casing and projecting to theoutside thereof for. slidably holding said doubled-back spring end.

3. In a hand lamp, a casing, a contact means within the casing, acontact spring having a control part and an end doubledhack on itselfboth outside of the casing and one end projecting within the casing incooperative relation with said contact means, and a loop integral withthe casing and projecting outside thereof for holding the doubled-backend under tension but slidably with respect to the casing.

4. In a-hand lamp, a casing, a battery and a bulb enclosed therein, aholder for said bulb, a contact spring having one end cooperating Withsaid holder, the other end of. saidspring being doubled back, and a loopintegral with said casing and projecting to the outside thereof forslidably holding saiddoubled-baclr spring end.

5. In a hand lamp, a casing, a battery and a bulb enclosed therein, aholder for said bulb, a contact spring having a central part and an enddoubled back on itself, both outside of the casing, and one endprojecting within the casing in cooperative relation with said holder,and a loop integral with the casing and projecting outside thereof forholding the doubled-back end under tension -butslidable with respect tothe casing.

6. In a hand lamp, a casing, a battery and a bulb enclosed therein, a.contactspring both ends of which point. in the same direction, one .endof said spring projecting inside the casing and cooperating with thebulb circuit, the other end extending outside the casing and a loopintegral with the casing enclosing the said other end.

In testimony whereof, I. hare signed my name to this specification, this30 day of July 1925.

I CHARLES J. NELSON.

